pitchipoy IKFK parameter not showing in dopesheet or fcurves
Ahh, i found solution. If anyone is in same situation. rig maintain ALL IK FK switches and stretch options at end of dopesheet (mostly hidden) you have to make sure, following


mouse icon "showing selected object channels" is OFF
ghost icon "include channels from bone hidden etc" is ON


now when i know this, i think its very reasonable to have them there separately managed. this behavious is slightly different than rigify but good enough. thanks pitchypoy for awesome rig.